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Division Spotlight
Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Latest News
Vogtle-3 shuts down for valve issue
One of the new Vogtle units in Georgia was shut down unexpectedly on Monday last week for a valve issue that has since been investigated and repaired. According to multiple local news outlets, Georgia Power reported on July 17 that Unit 3 was back in service.
Southern Company spokesperson Jacob Hawkins confirmed that Vogtle-3 went off line at 9:25 p.m. local time on July 8 “due to lowering water levels in the steam generators caused by a valve issue on one of the three main feedwater pumps.”
Chul Hee Min, Jang Guen Park, Chan Hyeong Kim
Nuclear Technology | Volume 168 | Number 1 | October 2009 | Pages 89-92
Detectors | Special Issue on the 11th International Conference on Radiation Shielding and the 15th Topical Meeting of the Radiation Protection and Shielding Division (Part 1) / Radiation Protection | doi.org/10.13182/NT09-A9105
Articles are hosted by Taylor and Francis Online.
A scanning-type prompt gamma measurement system, called prompt gamma scanner (PGS), was constructed and used to determine the relationship between the proton dose distribution and the longitudinal profile of the prompt gammas generated by the nuclear interaction from the proton beam passage in a medium. However, the PGS system entails insuperable difficulties when used in clinical proton therapy owing to its scanning process. In order to measure the prompt gamma distribution without the scanning process, it was proposed to develop an array-type prompt gamma measurement system that can measure the prompt gammas with a linear array of radiation detectors through multiple collimation slits. Prior to constructing a full-scale measurement system with many detectors and multiple data acquisition channels, a simplified prototype measurement system, using only one detector moving from one measurement location to the next, was constructed in the present study and applied to a 39-MeV proton beam. The results are very encouraging, as the prototype measurement system predicted the distal dose edge very accurately within a few millimeters of error despite the fact that the level of background gammas increased as a result of reduced collimator shielding.